/* Casaroo Education Hub — stylesheet
   Built on the Casaroo_19 design system (tokens copied from getcasaroo-landing/index.html).
   Trustworthy & premium: Source Serif 4 display + Inter UI, teal primary, amber accent,
   bones=teal / looks=amber reserved for scoring UI only. */

:root{
  --ink:#0C2A26; --ink-soft:#38504B; --muted:#5E726E;
  --bg:#F7FAF9; --bg-deep:#ECF4F1; --card:#FFFFFF; --line:#E2ECE8;
  --teal:#0F766E; --teal-600:#0D9488; --teal-700:#0B5F58; --teal-900:#08332F;
  --amber:#F59E0B; --amber-700:#B45309;
  --bones:#0E7490; --looks:#C77700;
  --good:#1E8E3E; --warn:#C77700; --risk:#C5392B; --track:#E7EFEC;
  --sh-sm:0 1px 2px rgba(8,51,47,.06); --sh-md:0 10px 30px -12px rgba(8,51,47,.20);
  --sh-lg:0 30px 70px -24px rgba(8,51,47,.30);
  --r-sm:10px; --r:16px; --r-lg:24px; --pill:999px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,.serif{font-family:'Source Serif 4',Georgia,serif;letter-spacing:-.4px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.narrow{max-width:760px}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
.eyebrow{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--teal)}

/* Header — sticky frosted bar (mirrors landing) */
#siteHeader{position:sticky;top:0;z-index:50;background:rgba(247,250,249,.72);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:15px 0}
.brand{display:flex;align-items:center;gap:11px;font-weight:600;font-size:23px;color:var(--ink);font-family:'Source Serif 4',serif;letter-spacing:-.3px}
.brand .roo{color:var(--amber-700)}
.brand .mark{width:36px;height:36px;flex:none;border-radius:9px;background:var(--teal);color:#fff;display:grid;place-items:center;font-weight:600;box-shadow:0 3px 8px rgba(15,118,110,.22)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a.txt{color:var(--ink-soft);font-weight:500;font-size:15px}
.nav-cta{display:inline-flex;align-items:center;gap:7px;background:var(--teal);color:#fff;font-weight:600;font-size:15px;padding:10px 20px;border-radius:var(--pill);box-shadow:0 8px 18px -8px rgba(15,118,110,.55)}
.nav-cta:hover{background:var(--teal-700);text-decoration:none}
@media(max-width:680px){.nav-links a.txt{display:none}}

/* Breadcrumb */
.crumbs{font-size:13px;color:var(--muted);padding:22px 0 0}
.crumbs a{color:var(--muted)} .crumbs a:hover{color:var(--teal)}
.crumbs span{margin:0 7px;opacity:.6}

/* Page header block */
.page-head{padding:14px 0 8px}
.page-head h1{font-size:clamp(32px,5vw,52px);line-height:1.05;margin:10px 0 0;font-weight:600}
.page-head .lead{font-size:clamp(18px,2.2vw,21px);color:var(--ink-soft);margin:18px 0 0}

/* Meta chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 0}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;
  border:1px solid var(--line);background:var(--card);border-radius:var(--pill);padding:7px 14px;color:var(--ink-soft)}
.chip .dot{width:8px;height:8px;border-radius:50%}
.chip.cost{color:var(--ink)} .chip.cost .dot{background:var(--amber)}
.chip.urg-before_purchase .dot{background:var(--risk)} .chip.urg-before_purchase{color:var(--risk)}
.chip.urg-immediate .dot{background:var(--risk)} .chip.urg-immediate{color:var(--risk)}
.chip.urg-soon .dot{background:var(--warn)} .chip.urg-soon{color:var(--amber-700)}
.chip.urg-monitor .dot{background:var(--good)} .chip.urg-monitor{color:var(--good)}
.chip.system .dot{background:var(--teal)}

/* Article body */
article{padding:30px 0 10px}
article h2{font-size:26px;margin:34px 0 10px;font-weight:600}
article p{font-size:17px;color:var(--ink-soft);margin:12px 0}
article p strong, article li strong{color:var(--ink)}
article ul{margin:12px 0 12px 22px} article li{margin:7px 0;color:var(--ink-soft);font-size:17px}

/* Honest-line / not-an-inspection callout */
.callout{display:flex;gap:14px;background:var(--bg-deep);border:1px solid var(--line);
  border-left:4px solid var(--teal);border-radius:var(--r);padding:18px 20px;margin:26px 0}
.callout .ico{flex:none;width:26px;height:26px;color:var(--teal)}
.callout p{margin:0;font-size:15.5px;color:var(--ink)}
.callout strong{color:var(--ink)}

/* FAQ */
.faq{margin:34px 0 0}
.faq h2{margin-bottom:6px}
.faq details{border:1px solid var(--line);border-radius:var(--r-sm);background:var(--card);
  padding:0 18px;margin:10px 0;box-shadow:var(--sh-sm)}
.faq summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:600;font-size:16.5px;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--teal);font-size:22px;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"\2013"}
.faq details p{padding:0 0 16px;margin:0;color:var(--ink-soft);font-size:16px}

/* Sources (external citations) */
.sources{margin:38px 0 0;padding:22px;background:var(--bg-deep);border:1px solid var(--line);border-radius:var(--r)}
.sources h2{font-size:15px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--muted);margin:0 0 12px;font-family:'Inter',sans-serif}
.sources ul{margin:0;padding:0;list-style:none}
.sources li{position:relative;padding:7px 0 7px 20px;font-size:15px;color:var(--ink-soft);border-bottom:1px solid var(--line)}
.sources li:last-of-type{border-bottom:none}
.sources li::before{content:"\2197";position:absolute;left:0;color:var(--teal);font-weight:600}
.sources li a{font-weight:600;color:var(--teal)}
.sources .src-note{margin:12px 0 0;font-size:13.5px;color:var(--muted)}

/* reviewed line */
.meta-foot{margin:22px 0 0;padding:18px 0 0;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.meta-foot .reviewed{font-weight:600;color:var(--ink-soft)}

/* Related cards / grid */
.section-title{font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--muted);margin:40px 0 16px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:20px;box-shadow:var(--sh-sm);transition:box-shadow .2s,transform .08s}
.tile:hover{box-shadow:var(--sh-md);text-decoration:none;transform:translateY(-2px)}
.tile h3{font-size:19px;color:var(--ink);font-weight:600;margin:0 0 6px}
.tile p{font-size:14.5px;color:var(--ink-soft);margin:0 0 12px}
.tile .tile-meta{display:flex;gap:8px;flex-wrap:wrap}
.tile .mini{font-size:12px;font-weight:600;color:var(--muted);border:1px solid var(--line);border-radius:var(--pill);padding:4px 10px}
.tile .mini.cost{color:var(--amber-700)}

/* Pillar / hub intro */
.intro{font-size:clamp(18px,2.3vw,21px);color:var(--ink-soft);max-width:62ch;margin:18px 0 6px}

/* CTA band */
.cta-band{background:var(--teal-900);color:#fff;border-radius:var(--r-lg);padding:40px;margin:54px 0;text-align:center}
.cta-band h2{color:#fff;font-size:30px;font-weight:600;margin:0 0 8px}
.cta-band p{color:rgba(255,255,255,.78);margin:0 auto 20px;max-width:46ch}
.cta-band .btn{display:inline-flex;align-items:center;gap:8px;background:var(--amber);color:var(--ink);
  font-weight:700;padding:14px 28px;border-radius:var(--pill);font-size:16px}
.cta-band .btn:hover{text-decoration:none;filter:brightness(1.05)}

/* Glossary */
.glossary-list{margin:24px 0}
.gterm{border-bottom:1px solid var(--line);padding:16px 0}
.gterm dt{font-weight:600;font-size:18px;color:var(--ink);font-family:'Source Serif 4',serif}
.gterm dd{margin:5px 0 0;color:var(--ink-soft);font-size:16px}
.gterm dd a{font-weight:600}

/* Footer */
footer{border-top:1px solid var(--line);margin-top:50px;padding:30px 0;color:var(--muted);font-size:14px}
footer .disc{max-width:70ch;margin:8px 0 0}

/* Pillar nav chips on hub */
.pillar-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;margin:26px 0}